twentytwenty_nav_menu_social_icons( string $item_output, WP_Post $item, int $depth, stdClass $args ): string

637function twentytwenty_nav_menu_social_icons( $item_output, $item, $depth, $args ) {638	// Change SVG icon inside social links menu if there is supported URL.639	if ( 'social' === $args->theme_location ) {640		$svg = TwentyTwenty_SVG_Icons::get_social_link_svg( $item->url );641		if ( empty( $svg ) ) {642			$svg = twentytwenty_get_theme_svg( 'link' );643		}644		$item_output = str_replace( $args->link_after, '</span>' . $svg, $item_output );645	}646 647	return $item_output;648}